Grains: Grains give the rock it's texture. Igneous rock : Forms from the cooling of molten or lava below the surface. Sedimentary rock: Forms when the particles of other rocks or the remains of plants and animals get pressed and cemented. Metamorphic rock: Forms when an existing rock is changed by heat,pressure, or chemical reactions.
Classifying rocks
Table of Contents
Vocabulary
Grains: Grains give the rock it's texture.
Igneous rock : Forms from the cooling of molten or lava below the surface.
Sedimentary rock: Forms when the particles of other rocks or the remains of plants and animals get pressed and cemented.
Metamorphic rock: Forms when an existing rock is changed by heat,pressure, or chemical reactions.
outline
*how geoligists classify rocks
texture
*grain pattern
*no visisble grain
mineral composititon
origin